Video: Facebook Messenger vs Google Hangouts

Facebook Messenger is an instant messaging service and software application which provides text and voice communication. Available now for Android and iPhone. Secure Facebook Messenger alternatives are Signal and Telegram. If you are looking for Facebook Messenger alternatives for business pay attention to GoToMeeting, Skype for Business.
Google Hangouts is a live video chat app. It allows to share your screen, collaboratively draw on a whiteboard, edit Google Docs documents, create broadcasts for the unlimited number of viewers. Splitted into group chat app and videoconferencing app. Secure Google Hangouts alternatives are Signal and Telegram.
Face to face in the news:

2016 - Facebook Messenger now allows to build chatbots. Beware Google Hangouts

Facebook Mesenger will now allow businesses to deliver automated customer support, e-commerce guidance, content and interactive experiences through chatbots like Kik, Line and Telegram that have their own bot platforms. Zuckerberg explained that with AI and natural language processing combined with human help, people will be able to talk to Messenger bots just like they talk to friends. Through the Messenger Platform’s new Send/Receive API, bots can respond with structured messages that include text, images, links and call to action buttons. These could let users make a restaurant reservation, review an e-commerce order and more. You can swipe through product carousels and pop out to the web to pay for a purchase. A new persistent search bar at the top of Messenger will help people discover bots.

2012 - Google replaces GMail Video chat with Google Hangouts to keep up competition with Facebook Messenger

Google should have integrated the variety of its Chat/voice/video services and applications long time ago. And just now they start to do it with the simplest and most effective step - replacement of GMail's video chat with Google Hangouts. Both services are using the same browser plug-in and the same authorization base. But Hangouts provides much more features: free videoconferencing for 10 participants, screen-sharing, whiteboarding, collaborative editing of Google Docs, simultaneous Youtube-video co-watching, webinars, etc. (there is a even a catalog of third-party apps that work with Hangouts). Also, now you can make video calls not only to contacts who are in GMail, but also to those who is in Google +, and not only in browser, but also on Android, iPhone or iPad. Google will be rolling out the new feature during 2 weeks.